Can anyone provide the test cases where this question is getting wrong ans

https://www.codechef.com/LTIME89B/problems/COPAR
And i also want to mention i have seen the python code also with this logic getting AC.
code in cpp:

#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
using namespace std;
int gcd(int a,int b){
	 if (a == 0)
        return b;
    if(b==0)
    	return 0;
    return gcd(b % a, a);
}
int d(vector<int> a,int j,int n){
	int x=1;
	for(int i=j;i<n;i++)
		x=(x*a[i]);
	return x;
}
int solve(vector<int> a,int n){
	for(int i=0;i<n-1;i++){
		int l=d(a,0,i+1),r=d(a,i+1,n);
		if(gcd(l,r)==1){
			return i+1;
		}
	}
	return -1;
}
int32_t main(){
#ifndef ONLINE_JUDGE
	freopen("input.txt","r",stdin);
	freopen("output.txt","w",stdout);
#endif
	int t;
	cin>>t;
	while(t--){
		int n;
		cin>>n;
		vector<int>a(n);
		rep(i,0,n)
		cin>>a[i];
		int x=solve(a,n);
		if(x!=-1)
       cout<<x<<'\n';
     		}
	}

code in python:

def prod(myList) :
    result = 1
    for x in myList:
        result = result * x
    return result


def d(a, b):

    if a == 0:
        return b
    return d(b % a, a)


def L(n, seq):
    for i in range(n-1):
        a = prod(seq[:i+1])
        b = prod(seq[i+1:])
        if d(a, b) == 1:
            return i + 1
        else:
            continue


T = int(input())
for _ in range(T):
    n = int(input())
    sequence = list(map(int, input().split()))

    print(L(n, sequence))

Overflow.
Multiplying will exceed 10^18 which is max limit of long long int

if i apply unsigned long long int it also says wrong ans.

You cannot store it in any data type. Check the constrains for 25 points.
A_i<=10^5 and N<=200.
Even if you put N=100 and all A_i=10^5, it would be 10^5 100 times would be much more than any limit of data type.
Since python has no such limit on number, hence it is being accepted in python